焦油渣与污泥基活性炭的制备及其处理煤化工废水研究  

Preparation of sludge based activated carbon with tar residue and its application in coal chemical industrial wastewater treatment

作　　者：冉令慧 金学坤 李晓辉 邹海旭 曹卫东 RAN Linghui;JIN Xuekun;LI Xiaohui;ZOU Haixu;CAO Weidong(Yili Xintian Coal Chemical Co.,Ltd.,Yili 835004,China;School of Environment,Tsinghua University,Beijing 100085,China)

机构地区：[1]伊犁新天煤化工有限责任公司,新疆伊犁835004 [2]清华大学环境学院,北京100085

出　　处：《工业用水与废水》2024年第3期71-76,共6页Industrial Water & Wastewater

基　　金：新疆维吾尔自治区重点研发计划项目(2022B01001)

摘　　要：利用焦油渣、沥青与少量淀粉、酚醛树脂、羧甲基纤维素等,复配出廉价的环保粘结剂配方;以气化筛余物(粉煤)、生化污泥为原料,通过挤压成型、碳化、活化工艺制备活性炭,开展公斤级半中试试验,确定其最优炭化时间为50 min,炭化温度为600℃,活化时间为2.5 h,活化温度为900℃,得炭率达40%。制备所得的4 mm柱状活性炭产品,中孔结构较发达,强度为92.8%,碘值为611 mg/g,比表面积为302.54 m^(2)/g,达到GB/T 7701-2008《煤质颗粒活性炭》的各项指标要求,对煤化工园区污水处理厂尾水COD有较好的去除效果。A cost-effective and environmental friendly adhesive formula was prepared by tar residue,asphalt and a small amount of starch,phenolic resin,carboxymethyl cellulose and some other materials.Using gasification residue(coal powder),biochemical sludge as raw materials to prepare activated carbon,a kilogram scale semi pilot experiment was conducted through extrusion molding,carbonization,and activation processes.The optimal condition was determined as follows:the carbonization time and temperature were 45 min and 700℃respectively,the activation time and temperature were 3 h and 900℃respectively,the carbon product yield reached 40%.The prepared 4 mm columnar activated carbon product has a well-developed mesoporous structure with a strength of 92.8%,an iodine value of 611 mg/g,and a specific surface area of 302.54 m^(2)/g,fully meeting the requirements of various indicators of GB/T 7701-2008 Granular activated carbon from coal;besides,in coal chemical industrial park,good COD removal effect was obtained.

关 键 词：焦油渣 生化污泥 柱状活性炭 工艺与配方 煤化工废水 

分 类 号：X703.5[环境科学与工程—环境工程]